Rivet-heading machine



Sept. 9, 1924.1- 1.507.958

T. HANSEN. ET AL nvm HEADING MACHINE Filed OC'L. 14'4v 1921 v 4 Sheets-Sheet l mix/m {lilo-1. mz v4. v

Sept. 9 192.4.

T. HANSEN ETvAL RIvET HEADiNq MACHINE Filed Oct 14, 1921V `4 sheets-sheet 2- Sept. 9, i924.

1.507,958 T. HANSEN ET Al.

RIVET HEADING MACHINE Filed Octbl4, 1921 4 Sheets-Sheet 5 fJG. .9. a J4? JGJU. 9 44 4532 Sept.

T. HANSEN ET AL RIVET HEADING' MACHINE Filed OCT.. 14, 192] 4 Sheets-Sheet 4 Patented Sept. 9, I1924.

UNITED STATES THoRvALD HANSEN AND REIMAB. c. F.

PATENT foFrl-CE.

KURTZE, or MILWAUKEE, wrscoNsIN, As-

SIGNORS TO'f/. O. SMITH CORPORATION, OF MILWAUKEE, WISCONSIN, A CORPORA- TIoN orxNEw YORK.

RIVM-HEADING- MACHINE.

Application led October 1921. Serial No. 507,737.'

To. all whom 'z't may concern.'

' Be it known that we, THoRvALD HANSEN and REIMAR C. F. KURTZE, citizens of the United States, and residing in the city of Milwaukee, county of Milwaukee, and State of Wisconsin," have invented certain new and useullmprovements in Rivet-Heading Machines; `and we do declarethe following to -be a clear, exact, and complete description thereof, such as will enable others skilled in the art to -which the invention pertains to make and use the same, reference being had to .the accompanying drawings as showing a construction in which our invention has been embodied.

This invention relates to machines for riveting together f assembled sheet metal bars and other parts which enter into the construction of automobile and other vehicle frames. 'The invention comprises riveting mechanism adapted principally to the work oflriveting together the anged side and cross bars of such frames. The machine in the embodiment which we have chosen as an illustration, is constructed to operate upon rivets which extendv horizontally in the lassembled -frame elements, whenthe latt'er are presentedto the riveting mechanism, but its fundamental construction is applicable to machines forl operating upon vertically placed rivets, as well as to machines for performing other and different operations.

Machinesl embodying the present invention' are designed to form elements of the assemblage of machines disclosed i-n -an 'aplication filed January 21 1918, by R. Stanley Smith, Serial No." .21Q,934, a'nd on which Patent No. 1,897,020was granted No vember 15, 1921, such assemblage including machines which by their .sub-divided but `related and connected 4 successive operations, punch from metal plates and. strips the side and cross bars and, other blanks used in con- 'constitu'ent parts, and secure all of such structing an automobile or other4 vehiclev parts in their respective positions,`by means of rivets,so that in a continuous operation roi mechanical devices a completed automobile orother vehicle frameof .unitary and rigid structure is automatically produced.

In the assemblage described inl'the patent above referredto, a plurality of riveting machines embodying the principles of' our invention and .operating in the manner dis-A closed, will be employed at each riveting station. .The number and position of such man.

chines will be determined-by the number of rivets to be set in unitingthe side bars and cross bars. and in attaching'other parts to the automobileV frame, and by the relative of4 the riveting machines will be adjustedto the desired vertical and lateral positions to bring the riveting, mechanism into line with the rivets, when the parts to be riveted together to form a framehave been assembled and positioned for the action thereon of the riveting mechanism. p

Inasmuch as precise location of the riveting mechanism with relation to the work conveyor shown and described in the patent referred to, and by means of which the assembled frame elements are presented to the riveting machines, is necessary to the attainment of satisfactory results in the operation of the present invention, lWe havel devised c5 location of such rivets. The tables of each means for securing an accurate vertical and i' lateral or radial 'adjust-ment of the table,

into the pathof travel of the Work conveyor, 100

reference to the assembled parts which theyY after the assembled Jframe parts carried thereby and to be riveted are brought into rated dies of the riveting mechanism will 'be pos`tioned on opposite sides of the frame member, one die being adjacent the head of the rivet and the other die in line with the point.

vWeV have also devised novel actuating means for so moving the riveting mechanism into operating position with relation to the assembled frame elements, and tor actuating such mechanism when properly positioned, to perform -the riveting operations.

The appended claims will point out these as vWell as other novel features residing in our invention.

In' the drawings which accompany this specification,

Figure 1 is a view in side elevation showing our rivetingl machine, with certain details of construction shown in section.

Fig. 2 is a sectional view on the line 2 2, Fig. 1, of the cams for positioning the riveting head and withdrawing the head after each operation.

Fig. 3 is a view showing the action of the riveting head in spreading a rivet to imite a cross bar to a side bar. of an automobile frame.

Fig. 4 is an end view of the riveting head in its operating position, the View being taken on the line 4 4, Fig. 3.

Fig. 5 is an enlarged longitudinal sectional view through the pivoted housing, and showing the arrangement within the housing of the cams and toggles which inipart movement to the riveting elements, and illustrating somewhat more clearly the action of the riveting mechanism. v

Fig. 6 is a plan view, partly in section, of the housingr Jfor the cams and toggles, with the riveting headas positioned for a riveting operation, this view also showing the riveting head by dotted lines as in its inoperative and retracted position, which it assumes before and after each rivetingoperation.

Fig. 7 is a sectional view on the line 7 7. Fig. 6, showing the manner of mounting the housing on the table of the machine, so as to provide for the lateral movement of theA riveting head which is supported in the housing.

Fig. 8 is a view in elevation, the opposite of Fig. 1. but broken away in part, showing the cam and lever arrangement for actuating the rack to impart lateral movement to the riveting head, and showing also the cominutator for controlling the driving clutch,

Fig. 11 is a diagram showing the electricalV circuits of a riveting station comprising three riveting machines, and also the wiring for the conveyor by means of which the -frame is carried past the riveting station.

Fig. 12 is an enlarged vertical sectional view through the housing, looking Jfrom 4the right in Fig.A 5, andshowing some of the parts in section and others in elevation.

Fig. 13 is a detail view showing in elevation the actuator for the driving clutch, with certain parts shown in section.

Fig. 14- is a plan view partly in section, looking from the top of Figs. 5 and 12, of the solenoid and the devices actuated thereby to render effective the actuator for the driving clutch.

The machine comprises a base 10, which may be secured to the ioor, a pedestal 11, connected to the base, and a table 12, attached to the pedestal. The riveting head R and its operating mechanism are mounted upon and carried by the table 12.

The pedestal 11 is formed of two hollow cylinders, 13 yand 14, the outer and upper cylinder 13 being attached to the table and the inner and lower cylinder 14 heilig adjustably positioned upon the base. The two cylinders 13 and 14 forming the pedestal, are constructed for axial movement, one within the other, whereby there'exists capacity for vertical adjustment of the table with relation to the base. The outer cylinder 13, is free to slide over the inner cylinder 14, so that the desired elevation of the riveting head R carried by the table may be secured.

The said inner cylinder 14 is screw-threaded on lits exterior surface, as at' 'An internally screw-threaded ring 16 is placed 'about and engages the threads 15 of the cylinder 14. The ring 16 is provided with gear teeth 17 upon its periphery, and with .the gear Iteeth 17 is engaged a pinion 18, upon the lower end of a vertical shaft` 19, jour-n nalled in lugs V2O upon the outer cylinder 13. A bracket 21 extending from the cylinder 13 carries a short shaft 22, to the outer end oi which a hand wheel 23 is secured. Through bevel pinions 24, connecting the shafts 19 and 22, motion is transmitted from the hand wheel to the pinion 18. The rotation ot the screw-threaded ring 16 about the threaded cylinder 14, acts to raise or lower the table C. and thus the desired vertical adjustment a bolt 27. By tightening the bolt anderwing the lugs toward 4each other, thus clampinto which opening is fitted the reduced lower, end 29, of the cylinder 14. The said lower end of the cylinder 14 is provided,

with a laterally extending plate or-flange 30,

by means of which the attachment in adjusted position of the pedestal 11 to the base 10 of the machine may be effected. We have shown vthe plate or angeh30, Fig. 10, as provided with extensions 31, in which vertical slots 32 are formed therethrough, and which slots are disposed in parallel planes.

' The opening 28, in the base is enlarged at the upper side to form a recess in which are placed two eccentrics 33, 34, oneworking within the other, the inner eccentric 33 being journalled on the reduced lower end 29 of the cylinder 14, and each eccentric is provided with gear teeth 35, 36, on the face thereof. Mounted in the'base 10, and also in the plate 30, are short shafts 37, carrying at one end bevel pinions 38, which mesh with the gear vteeth 35, 36, ofthe respective eccentrics 33, 3 4, and at their.' other ends bevel pinions 39. Standards 40, 40 attachl ed to the base 10 and to the plate 3 0, -support shafts 41, 41', having at one end bevel pinions 42, 42', engaging with the pinions 39, 39', and to the other ends ofthe shafts are aliixed hand wheels 43, 43': By turning these hand Wheels the eccentrics 33, 34, are rotated through the connections described, the lateral-or radial adjustment of the pedestal and table within the limits of the compound throw of the-eccentrics iseffected, and the riveting head is brought to the exact position with relation to the assembled frame elements necessary for the successful operation of the riveting machine.

The base 1Q is slotted as at 44, such slots standing in planes transverse to the slots 32 in the plate 30.-! Bolts 45 are passed through the slots in the base 10 and plate 30, and by tightening the said bolts, the adjusted lateral or radialposition of the riveting head is secured. Although a compound eccentric motion is shown, it will be understood that a single eccentr1e operating as described, may be used, to effect the adjustments desired.

Mounted upon the table 12, in the mannerl hereinafter described, is a carrying frame 46, for the riveting head and its operating mechanisi. This carrying frame is composed of a base 47, and two upstanding side plates 48 and 49. The mountingof the Y frame 46 upon the table must be such as to permit the riveting-head R to have a bodily movement into operative relation to the upon the upper side thereof, is another postv 53, likewise set concentrically with relation to such other end of the plate. The arcuate4 portion of theedge of each plate 52, adjacent t-he upstanding. post'53, is toothed as at 54; see Fig. 6. A toothed rack 55 engages the toothed sections of the two plates 52, and imparts oscillatory motion to the l said plates, in themanner hereinafter described. Ball bearings encircle the posts 51, and ease the rotary reciprocations of the plates 52, on the table 12. A wear plate 56, is set upon the lower end of the posts, and a nut 57, is threaded on the end of the latter, ball bearings, as before, being disposed between these parts. i

The side plates 48 and 49, of the carrying, frame 46, h'ave enlarged openings 58 for the bushings 59, attached to the side Walls 60, 61, of the housing 62, and on which bushings the said housing rocks in its oscillating movements to bring the riveting devices into and out of position in the plane of the work, one of such openings and bushings being shown in Fig. 12. A transverse shaft 63', journalled centrally in the said bushings, is the axis about which the housing 62- oscillates. Other transverse shafts 64, 65, and 66, are journalled in the side Walls 60, 61,\of the housing 62.

The rear end of the housing 62 is slotted at 155, sov as to permit the'rocking movement of the said casing about the shaft 63 without interference with the motor shaft,

the adjacent corner .of the housing being rounded, as shown in Fig. 5, so as to permit clearance of the carrying frame 46 in such rocking movement.

The upstanding posts 53 hereinbefore r'eferred to, act as journals for the carrying frame-46, the said posts being received il openings formed in the base 47, of the crrying frame. Ball bearings like those described in connection with the arrangement of. the posts 51, are provided for the posts 53, as shown in Fig. 7 The rack 55 which parted to the riveting head into and out vof the dotted line position indicated in Fig. 6. To facilitate .the swinging movement of the riveting head, the frame 12 is provided at the top thereof with bearing surfaces 157,

`which are inclined with respect to the di- Icarr in r frame 46 is cou led by a short Y e P driving shaft to the pinion 67, engaging a bevel gear 68, which latter is loose upon the shaft 63. Fast upon the shaft 63, is a gear 69, which engages with a gear 70, fixed upon the shaft 64. Other gears 71 and 72, fixed upon the said shaft 64, mesh with gears 73 and 74, fast upon the shaft 66. The several cams which operate the rivetin mechanism are mounted upon the the said shaft 66.

A link 75 is attached at one end to a stud 76, set in the plate 46, Fig. 1. At its free end, this link is widened and provided with an elongated opening, Fig. l through which passes the shaft 66. The said shaft,

carries cams 77 and 78 separated by the link 75, and co-acting with anti-friction rollers 79, 80, on opposite sides of the link and aligned with the perspective cams. In their rotation, the cams 77 and 78, through the link 75, which as before stated, is anchored at one end, will rock. the housing 62 on its aXis, the shaft 63, and so move Vthe riveting head into and out of operative position in a vertical plane. A counterbalancing expansion spring 81 for the housing 62 and riveting head is provided. On the plate 46, is an ear 82, provided with an enlarged opening, through which passes the rod 83, attached at one end to a stud 84, on the .said plate. The counter-balancing spring referred to is confined about the said rod between the said ear and an adjusting nut 85, on the threaded end of the lng against interposed washers.

rod, the opposite ends ofthe spring bear- A spherical Washer 86, is passed over the rod 83, and is seated in a correspondingly formed recess in the ear 82, so that the said rod may oscillate in a vertical plane as it moves through the enlarged opening in the ear. The said opening in the free end of the link 75,. is indicated 87, in Figs. 1 and 2, and in the opening is a slide block 88, mounted upon the shaft 66, which block guides the end of the `link 75 and serves to hold the rollers 79, 80,in true relation to their actuating cams. The end of the shaft 66 extends into a bay 89, formed on the side of the housing 62, in which bay the said cams are placed. The cam mechanism and spring compensation described are duplicated at the other side of the housing 62.

The gear 74, is provided with a cam groove 90, in which runs an anti-friction roll mounted upon #the free end of a short arm 91, fixed upon one 4end of a short rock shaft 92, journalled in a boss in the side wall 61. A lever arm 93, is attached to the other end of the said shaft, and `is conneoted at its free end by a link94, to one end of a lever 95, centrally pivoted upon the said plate 49 of the frame 46. A roller pin at the other end of the lever 95, takes into the open notch of a lug 96, fixed io the toothed rack 5,5, whereby the plates 52 are oscillated by the engagement of the rack with the arcuate toothed portions of the said plates, so as to move the frame 46, with the housing 62 andthe riveting head R mounted thereon, in a lateral or horizontal direction into and out of 'operative relation to the work. The gear 74 makes one revolution for each operation of the riveting mechanism..

The housing 62A is provided with extended bearings 97, forming guides for the plunger or hammer 98, of the riveting mechanism. A block 99 is -boredzto receive the shaft of the plunger or hammer, on which shaft the said block slides freely. For a part. of its length, this block is reduced to form a sleeve 100 with shoulders 101, 102. The yoke 103 of the riveting head has a separable bearing 104, by means of which it may be attached to the sleeve of the block-99 between the shoulders thereof, and secured in the desired adjusted angular position thereon byl means of clamping bolts uniting the two parts of the separable bearing, so as to permit the anvil to enter the recess' at the junction of the side and cross bars.

A riveting die 105, is s'et in the end of the plunger 98, and the co-o'perating riveting die 106, constitutingthe anvil, is set inthe opposing inturned end of the yoke 103, as shown in, Fig. 5. A spring-pressed clamping sleeve 107, encircles the die 106, and I stands normallyA in advance of the face ,.thereof. Expansion springs 108, act through tionary position for the performance of the' riveting operation, as disclosed in the patent hereinbefore referred to. The sprlngs will be compressed and the sleeve will recede as the anvil 106 approaches the work.

The gear 73 is provided with a cam groove 110, in which runs an anti-friction roll upon xed tothe end of the plunger 98. The

-65. Links 121 .connect the pitman`119 and- .the linkv 120 at their pivotal point, to the block 99, .sliding onv the plunger 98. TheV 'links 12() and' 121, ac't as a. toggle 'to imsaid lever arm 115 andlink .116, ac t as a toggle to impart longitudinal reciprocation to the yplunger andthe die .105, when. ac-

tuated through the connections described by the cam formed in gear 73, to upset or spread the point of the rivet and unite the frame elements. As in the case of gear 74, the gear 73 makes one revolution for 4each operation of the riveting mechanism.

Between thel gears 73 and 74, the shaft 66 is divided and ra crankpin 118, connects the said gears. The said crank pin aetuates a pitman 119, connected at its other end to a link 120, pivotingon the fixed shaft part longitudinal reciprocation to the yoke .103, and die 105, when actuated by the crank 118,` to position the anvil 106, in the channel of the side bar and against the head of the rivet, to resist the pressure exerted by the plunger in the upsetting operation just described.

Referring to `Fig. 12, one face of the hub of the gear l68 is formed with a clutch face 122, 'which is, subject 'to engagement by thel clutch face 123 ofa clutch 124, the latter being splined upon .the shaft 63, so as to rotate therewith. rPhe other face of the hub-of gear 68 is formed as an ec'- centric 125, which reciprocates the link 126, theother end of which link is connected to a radial arm or vibrator 127 which is free to oscillate about a rock shaft 128, journaled in the side walls of the housing 62. An oppositely extending arm 129, is fixed upon the rook shaft 128, and a link 130 extends between the said arm 129 and one arm of a bell crank lever 131, the yoke of which engages and operates the clutch hub 124.

The opposite face of the clutch hub v124, is providedwith a projection 132, for engagement with a stop 133, formed on a boss on the side wall of the housing 62. A cylindrical casing 134, having a radial opening therein, is splined upon thev shaft 128, so as to oscillate therewith, and yet be free to have longitudinal movement thereon. This casing receives in the said opening, the vibrator 127, and the sides of the opening within the casing are provided with projections 135 and 136, designed for engagement at predetermined times With similar projections 137 and 138, on opposite lindrical casing, receiving between them the ends of the forked lever 141. An expansion spring 143, moves the core of the solenoid in opposition to its magnetic movement, when the solenoid is de-energized.

A small casing 144, attached to the side wall 61 of the housing 62, encloscs a rotary timing switch 145, which latter is connected to a gear 146, rotatingabout a stud in the wall of the housing. A gear 147, keyed to `the shaft 66, engages and drives the gear 1.46 andthe timing switch, one revolution for each two revolutions of the said shaft, which I as hereinbefore indicated, makes one revolution foreach operation of the riveting mech- Fig. 11 indicates the wiring of a station comprising three riveting machines, X, Y, Z, the machines being wired in parallel, and adjusted to operate synchronously but alternately with the conveyor which latter is indicated XX, at the right in the said Fig. 11. One of the riveting machines of the group at the station, in the present instance, the'machine Z, will be provided with a 'master switch, mounted upon the shaft of and operating synchronouslywith the timingl switch of. the said machine, the purpose of this master switch being -to con- .trol the movements of the conveyor jig through the timing switch of the latter. The conveyorjig is moved intermittingly with the machines atthe riveting station to convey the work step-by-stcp from one machine to the neXt, until all of such machines at the station which have been set for work, have performed their allotted operations, as disclosed in the patent` hereinbefore referred brush 150. Upon breaking lthe circuit 201 atthis point, the solenoid 139, is cle-magnetiz'ed, andthe spring 143 is freed for expansion to move the casing 134 to the left along the shaft 128, to bring the projection 136 into the path of movement ofthe projection 138 on the vibrator, in the upward loo movement of the latter. The shaft 128, is rocked in the said movement of the vibrator, and the clutch faces 122 and 123, are disengaged by the movement of the clutch member 124, through-they arm 129, link 130, and bell-crank 131. The vibrator 127, continues to o erate, however, through the movement of tiie eccentric 125, but the parts will remain at rest until after the solenoid has been again energized to move the casing 134 to the right, and the projection 135, thereon into the path of the projection 137 in the downward movement of the vibrator.

Normally separated contact points 153 and 154, attached to but insulated from the side wall 60 of the housing 62, are arranged to be brought together by the described movement of the bell crank 131, to close the break in circuit 203, provided each vof the riveting machines has completed its operation. These contact points constitute a safety device, which prevents the premature starting of the riveting machines, should there be any failure upon the part of one of them to effect an'operation.

Upon the completion of the riveting operation, the timing switch 14:5, passes from contact with the brush 150, in circuit 201, thereby breaking such circuit, as hereinbefore described, and comes to a position of rest in contact with brush 151, of circuit 202. This latter circuit, however, is broken at the point of the contact with the master switch of the conveyor jig, and will remain open until after the master switch has moved Meanwhile, the master switch of the riveting station has closed the break in circuit 203, and the conveyor jig will be moved to position the parts to be riveted. At the c onl clusion of the conveying movement, the tim-A ing switch of the conveyor jig will break circuit 203, and establish circuit 20a. At the same time, the master switch of the conveyor will close the break in circuit202, the solenoids will be energized, and the riveting mechanism be again brought into operation, through the devices described. As the timing switch 145, passes the brush 151, circuit 202 will be broken, and the riveting machines will come to a position of rest, with circuit 201 again established. The master switch of the riveting station will close circuit 204 at the same time, and the conveyor jig will be again moved. At the termination of the movement of the latter, circuit 201 will he closed by the master switch of the conveyor jig, and the cycle of operations commenced anew,

The side bar is indicated 100 and the cross bar 161, these elements constituting parts of an assembled automobile frame, presented and supported in a definite relation to the riveting mechanism, by means of the Conveyor mechanism disclosed in the said prior patent.

Having thus described our invention, what we claim and desire to secure by Letters Patent of the United States, is

1. In a riveting press, a movable riveting head provided with a set of riveting dies, in combination with'automatically operating means for moving the head to position the dies in operative relation to the work, and means for actuating the dies when so positioned to the work.

2. In arivetin'g press, a pivoted riveting head provided with a set of riveting dies, in combination with means for rocking the riveting head in a vertical plane to position the dies with respect to the work, and means for causing the riveting dies when so positioned to approach each other to perform a riveting operation'.- l

'3. In a riveting press, a base, a riveting head movable on the base and provided with a set of riveting dies standing normally out of the plane of movement of the work, in combination with automatically operating means for moving the riveting head to operatively position the dies thereof with .relation to the work, and means to actuate the dies when so positioned toperform a riveting operation.

1. In a riveting press, a riveting head comprising a yoke supporting oppositely arranged riveting dies, in combination with automatically operating means for moving the yoke to position the respective dies at opposite sides of the work, and means for causing the dies to approach each other when so positioned to effect a riveting operation.

5. In a riveting press, a riveting head comprising a yoke provided with oppositely arranged riveting dies, a plunger carrying one of the dies, and means upon the said yoke to permit 'angular adjustment of the yoke upon the plunger to enable the riveting dies to operate upon a rivet located in a re: cess in the work, 'in combination with means for moving the said' yoke to operatively position the dies with respect to the work, and actuating means for eflecting a riveting operation when the dies are so positioned.

6. In a riveting press for uniting a cross barto the side bar of 'an automobile or other frame, a riveting head comprising a yoke provided with an anvil and a hammer opposing each other, and a member co-acting with the anvilto exert a yielding pressure at the point of union of the bars, in combi-. nation with means for moving the yoke to position the dies on opposite sides of the work, and means for actuating the hammer to perform a riveting operation.

7. In a. riveting press, af riveting head comprising a yoke provided with co-operat perform a riveting operation upon` ing riveting dies oppositely arranged at'the ends thereof, in combination with means for moving the yoke to bring the dies into the plane of the work, means for effecting further movement of the yoke to position the dies with relation to the rivet, and means for actuating the dies when so positioned to perform a riveting operation.

8. In a riveting press, a riveting head provided with an anvil and a (2o-operating hammer,- in combination with automatically. operating means to move the riveting head into the plane of the work, meansvfor engaging the anvil with the work when the riveting head isso moved, and means for actuating the hammer to perform a riveting operation.

'9. In a riveting press, a.support, a riveting head provided with dies, the riveting head being mounted upon the said support for movement of the dies into the plane of the work, and for further movement to position the dies with relation to the work, in combination with means for imparting the respective movements to the riveting head, and means for effecting a riveting operation when the diesare so positioned.

10. In a riveting press, a, riveting head provided with an4 anvil an'lfa hammer arranged on opposite sides of the plane of the Work, toggle mechanism for moving the anvil into engagement with the Work, and toggle mechanism foractuating the hammer to perform avriveting operation.

11. In a riveting-press, a riveting head comprising ayoke provided with an anvill and a hammer, with means to move the yoke to position the anvil and hammer at opposite sides of the work, in combination with means to engage the anvil with the work,

and means to actuate the hammer to perform a riveting operation, both said last mentioned means being located at one end of the yoke.

12. In a riveting press, a pivoted riveting head comprising ayoke provided with dies standing normally out of the plane Vof the work, means for rocking the riveting head to position the dies with relation to the work, and mechanism located inthe line of the yoke and its pivotal point for actuating the dies to effect a riveting operation.

13. In a riveting press, a riveting head' f and a hammerspaced apart, means for rocking the riveting head to position the anvil and hammer at opposite sides ofthe work, and

riveting operation, when the riveting elevments are thus positioned.

'15. In a riveting press, a riveting head provided with riveting dies, a support for the head, and pivotal connections between the support and the riveting head, whereby the latter may be moved into the horizontal plane of the work to position the dies for a rivet-ingl operation, meansfor automatically moving the head, and actuating means for thel dies to effect a riveting operation upon the work. i A

c 16. In a riveting press, a movable riveting head provided with riveting dies standing normally out of the plane of the work, means for moving the riveting head into the plane of the work to position the riveting dies with.

relation thereto, in combination with a fixed driving motor, operative connections between the said fixed motor and the said moving means, and means for effecting a rivet-l ing operation when the ldies are positioned therefor. A

17. Ina riveting press, a lriveting head provided with co-operating riveting .dies

standing normally out of the plane of thev and a hammer, automatically operative` means for moving the anvillinto positional: one side of the Work and holding it in n- -gagement with the work and against t e pressure of the hammer during the riveting operation, arid means for actuating the hammer to perform the riveting operation.

19. In a riveting press, a .riveting head comprising a yoke supporting an anvil, a plunger upon which the yoke is guided, means to move the yoke onthe plunger to engagev the anvil'with the vvrln'and means to move the plunger to effect ariveting operation, the yoke moving means actingto resist the thrust of the plunger, whereby the point of the rivet is spread. A

20. In a rivetingl press, a pivot-ally mounted riveting head and 'a support' for the pivot thereof, in combination with cam-actuated connections between the pivotaly support and the riveting head, whereby the riveting head is moved into operative position with relation to the work, and means for effecting a riveting operation when the riveting head is thus positioned.

` 21.r In a riveting press, a movable riveting head provided with an anvil and a hammer adapted to bepositioned on oppositesides of the work, automatically operating means '130 for moving the anvil nto'engagement with the head of the rivet, and like operatingV means for moving the hammer into engagement with the point of the rivet to effect a riveting operation.

22` In a riveting press, conveyor mechanism for the Work, and a riveting head carryingan anvil and a hammer standing nor'- mally aside from the line of movement of the work, in combination with means: for moving the riveting head into operative position with relation 'tothe work to perform a riveting operation.

23. In a riveting press, conveyor mechanism for the Work, a riveting mechanism embracing an anvil and a hammer standing normally out of the line of movement of the 25. In a. riveting press, conveyor mecha nism forithe Work, a movable riveting head` normally positioned away from the line ot movement of the Work, riveting dies movable inthe head, means for moving the riveting head upto the work to position the dies in relation thereto, and means for actuating the dies to perform a riveting operation when so positioned.

26. In a riveting press, a. work conveyor movable in a fixed path, and riveting devices normally positioned away from such path, in

combination with means for moving the riveting devices to position the latter with respect to the Work, and means for actuating the said devices to perform a riveting operation.

27. A riveting press provided with a fixed path along which the Work is moved, and a riveting head normally standing away Jfrom such path to permit movement of the Work, in combination With means for moving the riveting head to position the dies thereof in relation to the Work, and means for eii'ecting a riveting action through the operation of the said dies.

28. In a riveting press, a riveting head provided with a set of riveting dies, and automatically operated means for moving such -head toa definite position With relation to the work, in combination with means for actuating the said dies to perform a rivet ing operation While so positioned.

. In testimony whereof, We have signed our names at Milwaukee, this 10th day of October, 1921.

` THORV. HANSEN.

REIMAR il. F. KURTZE. Witnesses:

W. F. Woont, E. W. BURGESS. 

